代码改变世界

7.中文输入验证-原生JS

2017-04-13 15:56  笨笨03  阅读(250)  评论(0)    收藏  举报 






 1 <!DOCTYPE html>
 2 <html>
 3 <head lang="en">
 4     <meta charset="UTF-8">
 5     <title>中文输入验证-原生JS</title>
 6 </head>
 7 <body>
 8 <input type="text" id="num" onblur="an()" onfocus="bn()"/>
 9 
10 <p id="p"></p>
11 
12 </body>
13 
14 <script type="text/javascript">
15     var an = function () {
16         var reg = /^[\u4e00-\u9fa5]*$/;
17         //var reg=/^-?\d+$/;//整数
18         // var reg=/^\d+$/;//正整数
19 
20         var input1 = document.getElementById("num").value;
21         var p1 = document.getElementById("p").innerHTML;
22 
23 //       console.log("正则:;"+reg.test(str));
24         if (!reg.test(input1)) {
25             document.getElementById("p").innerHTML = "请输入中文汉字";
26             document.getElementById("num").value = "";
27         } else {
28 
29             document.getElementById("p").innerHTML = "输入合法";
30         }
31 
32     };
33 
34     var bn = function () {
35         document.getElementById("p").innerHTML = "";
36     }
37 
38 
39 </script>
40 
41 </html>



View Code




 



<!DOCTYPE html>
<html>
<head lang="en">
    <meta charset="UTF-8">
    <title>中文输入验证-原生JS</title>
</head>
<body>
<input type="text" id="num" onblur="an()" onfocus="bn()"/>

<p id="p" ></p>

</body>

<script type="text/javascript">
    var an = function () {
        var reg = /^[\u4e00-\u9fa5]*$/;


         // var reg=/^-?\d+$/;//整数
        // var reg=/^\d+$/;//正整数



        var input1 = document.getElementById("num").value;
        var p1 = document.getElementById("p").innerHTML;

//       console.log("正则:;"+reg.test(str));
       if (!reg.test(input1)) {
            document.getElementById("p").innerHTML = "请输入中文汉字";
            document.getElementById("num").value = "";
        } else {

            document.getElementById("p").innerHTML = "输入合法";
        }

    };

    var bn = function () {
        document.getElementById("p").innerHTML = "";
    }


</script>

</html>